Component Importance Factor

All MEP components must be assigned a Component Importance Factor that is designated as IP in the body of the code. This is done by the design professional who has responsibility for the MEP system in question. The design professional is also responsible for assigning the component importance factor to that system.

There are just two IP values for MEP components, 1.0 and 1.5, neither of which are directly linked to the importance factor for the building structure.